Berta Cáceres is remembered at a ceremony in Rio Blanco, the area she fought to protect from a mining development before she was murdered.
Photograph: Mel Mencos/Nobel Women Initiative

María Santos Domínguez heard about the death of her good friend Berta Cáceres on the radio. She had just given birth to her youngest daughter, so she wasn’t with Cáceres the week she was murdered.

“It was a double blow because we were very close, we worked together in the communities,” said Santos Domínguez, a coordinator for the Civic Council of Popular and Indigenous Organisations of Honduras (Copinh), the organisation Cáceres co-founded 24 years ago to stop the state selling off the country’s ancestral lands to multinational companies.

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“It was a personal blow, and we knew we had lost a great leader – a leader who had been recognised internationally.”

Cáceres, who won the Goldman environmental prize for her work with Copinh, was gunned down in her home in the early hours of 3 March 2016. She had led the protest against the construction of the Agua Zarca hydroelectric dam in Río Blanco, western Honduras. Gustavo Castro Soto, a Mexican environmental activist, was injured in the attack.

Eight men have been charged with the murder of Cáceres, who was under state protection at the time after receiving numerous death threats. Two of the accused worked at the company leading the construction of the dam, Desarrollos Energéticos SA.

Cáceres’ family and supporters have always suspected the involvement of state officials in her killing. Last year, a Guardian investigation revealed the existence of leaked court documents linking the planning of the murder to military intelligence specialists connected with the country’s US–trained special forces.

The former security head of Desarrollos Energéticos SA is one of seven people arrested for the killing of Berta Cáceres. Photograph: Giles Clarke/Getty Images

Earlier thismonth, a report published by an expert group of lawyers concluded that senior managers in the company allegedly had a hand in her murder. The company has always denied any involvement. In response to the report, it said the company had never been involved in any violence and that information in the report had been taken out of context and “does not reflect reality”. The report was intended to create problems in the run up to the country’s elections later this month, it added.

Since Cáceres’ death, Domínguez, 43, has joined other members of the Lenca indigenous community for regular meetings among the oak trees of the lush, mountainous region of Río Blanco. Together, they say prayers and light candles in memory of their lost friend. It is also where they gather to find strength for the twin challenge of fighting the dam project and striving to ensure Cáceres’ killers are brought to justice.

While years of protests have brought construction to a halt, and resulted in funders discontinuing their support, the licence for the dam on the sacred Gualcarque river has not been withdrawn. The warehouses that stand empty along the road offer an ominous reminder that the project remains alive.

Santos Domínguez helped set up a road blockade when trucks were first spotted trundling along the narrow, winding lanes of Río Blanco towards the planned site for the dam on 1 April 2013. The community has said it was not consulted – a legal requirement – before the company was granted the licence.

“We saw the machinery coming in the distance. We’d said we didn’t allow it to come in the community, but they wanted to build a dam so didn’t listen,” she said. “I was not afraid, I was angry. I thought, ‘This is my land and my home.’”

But Santos Domínguez paid a high price for her actions. In the violence that followed when the police arrived to break up the protest, her brother was killed. She lost a finger and sustained cuts to her head from a machete. Her husband lost an eye. She is now wanted by the police and had to flee her home for a time for fear of being arrested – or made to disappear. She says harassment has got worse since Cáceres was murdered. She has had to keep her children off school after they had rocks thrown at them – by people “who know I was in Copinh” – while walking to class.

Rosalina Domínguez Madrid, who is in charge of Copinh’s finances, has also experienced harassment since Cáceres’ death. “People have been asking for me by name. Unknown people, but we are assuming it’s people paid by the company,” she said.

“There have been a lot of threats, and the life of one of my sons has been threatened. [It] must be people coming for me, to do the same thing to me as they did to Berta. When I go somewhere I don’t tell people where I’m going. I travel underground. I don’t really feel safe.”

Domínguez Madrid said that Cáceres’ death threw the international spotlight on the battle for land rights in Honduras – the deadliest place to be an environmental activist, according to the organisation Global Witness. More than 120 activists have been murdered for trying to protect the land or environment since the country’s 2009 coup. Copinh member Tomás García was murdered just months before Cáceres, and most attacks have gone unpunished.

Days after her death, Berta Cáceres was honoured at a ceremony on the Gualcarque river. Photograph: Orlando Sierra/AFP/Getty Images

Over the past eight years, the government has received a flurry of licence applications for hydroelectric, mining and agribusinesses projects. At the same time, there has been a crackdown on human rights.

Many more activists say they have been threatened with violence, or have faced intimidation and even sexual assault by police, members of the military or those paid to keep activists out of the way. Women, who have been at the centre of the protests in Río Blanco, face the added threats of abuse from their own families and communities, as machismo culture often relegates women to the sole role of homemaker.

Last month two Nobel peace laureates – Tawakkol Karman and Shirin Ebadi – visited Río Blanco to offer their support to the community and add their voices to the calls for justice for Cáceres.

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Beside an altar of flowers and photos of Cáceres, Karman, who won the Nobel prize in 2011 for her peace-building work in Yemen, told the crowd of women, men and children of all ages: “We are here to support all those who are struggling to defend human rights … Berta was a victim of those who didn’t respect those rights. We want to see justice brought to all those responsible for her murder. Those criminals must face the justice system and they should be in jail.”

Ebadi added: “My message to the world from here is they have murdered an activist who struggled to protect the environment, and there has not been justice in her case.”

Santos Domínguez knows that peace for the Lenca in Río Blanco will not come until those who authorised Cáceres’ murder are behind bars and the land rights for her people are recognised.

“Because we are poor they think we don’t know anything … But they are wrong because we are organised and we can protect ourselves from them,” she said.

“They murdered Berta and they thought that, with her dead, we would not continue – but we showed them we can.”